[TYPO3] newloginbox, permalogin feature?

[Carey O'Shea]

Hi,

I installed the newloginbox 3.0.0 extension on a site running TYPO3
3.8.1 for the Permalogin feature.

There is a checkbox in the Flexform that says: Show "Stay logged in"
checkbox (if switched on for the installation). My problem is that it
isn't working for me. Turning it on doesn't seem to do anything, no
checkbox is shown. 

Any ideas?

And what does "if switched on for the installation" mean?

Regards,
Carey.